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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05465a17b1af7c63a73b9fce1b7a8ab64d40d4073ea27c178ccf5b45f023e7e9' 
  AND token = '1ae71eow3r4ll0l7vzPyIkEkClIMbPMxfgBQWiRHo4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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