Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f6a9fb8a507c5a6e6ae787f4155f02efee45245954342837fea54ed686e7a86e' 
  AND token = 'GK5G4eSfJXHAwT47EKKQlmDNB6YYkpbvF7B587n3Gho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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