Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '24ba041c0e05ec595ead84d5a9665cce87d9c2f9556bcb2da31e8e560cdc717b' 
  AND token = 'UD0QY5lhPwqKp0vsRGNTBNgKRQe7w8gbodA6cPWjlVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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