Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b641767d08e4d34105962793ff4e03c34cc844a84519cb27fc47bd89365adbb' 
  AND token = 'kg7eALZI6iovvA4uPHxtyHg74b/0hKuojssZWLDQnMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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