Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa55cba8a7be79467476a3a8164a174309a7460e81372bd17bbfd31f76a80823' 
  AND token = 'Jnmq68xzbegY7B3or4Yo1n+EJDsHdS7BQaCd+7TkF+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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