Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '044b5d142053535272a7f54f8f252dcf5180dce5630e47990cb22383251a8035' 
  AND token = 'g5tedd45rS0gEDRoMxXD2CuWe7PzIiim6EfAHsr1L+o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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