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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0365bc44263abc9b479e2b023ee381c8483b8b1317c51ad4babf8f6f401ce590' 
  AND token = 'yghCmdNH4oIdaPttlTHw6EH821RpsT2emm1/tARjV0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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