Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e7d0cf6039eeaa372bc24141d52e037738697c471b41f92b972aef6314b271b' 
  AND token = '7MOWduajpDCX3LtwBFv3h6OK7jkzlIHCgEh8zr2ndaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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