Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0e428e4c71f4a9b120b66e80eae0fb5113010ede766e3fcc062935b558d16ab' 
  AND token = 'CxSq0v8Cc9T5JWW2q0RZvQq6K2zlNZwtrHkrnU6djZE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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