Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f43166e3cecec67ab1a14d488fdb240ad07c76cc76802b39bfeac46901943c4b' 
  AND token = 'xzszKNLHA8TThCc1JGjZDnceLvXGl3lYAhJikn01c/I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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