Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36417652f367c4fb24a54702bce97969189a3f4af59bfca199e1899d5735d325' 
  AND token = 'fC3fQWNIcb/92gjsBWPPo+fNymftNIEnwTiHHYnp850=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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