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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb36e5d8d763b446f231992d089fac87951c1a7fd156e771896fba2298c78f28' 
  AND token = 'OoSX67TPtMLiB7uhD87HXX72GjXaLxcOx6T2M2AERHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}