Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bc871a89aea5bd08816bdc582bbafb8949ef1531859a577790047b72cfd49e8' 
  AND token = '/yL6oxXJPM7oWDK7rX32JqdJOgPqM5wKMWsLOwA0TZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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