Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f980f064e3127096d074fbbe7fdedd02a357c172dae9ec1ca78849a158ad6f13' 
  AND token = 'LCFvvxbfzx7LXY0UGeEdaWk6H+VEMIbTLVzrBwzN62M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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