Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af7599e8cecf95ffc1a74c6f3da4678bc6571bafdfc322cae541e916854a7c78' 
  AND token = 'zxFbR0mJwGsRAKRGvhmEEaFEthtlEA4m8PRxjr4tMvU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00086

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}