Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d465654b7486f2316a06450474aa9a5e16cee00cd9745340941b809d39d078a' 
  AND token = 'UudxfhnE7Qvwm8K73W2I00uGZiHCAfOPw8Y2BlwkqTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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