Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db964d7eed3a8fe3f86ab0fce519a0828f10176223ebb7330caf27f0081fa249' 
  AND token = '1ifrPwEO0fu4L3fQbad+70+yx4+IKTyCVrQ1YP/me8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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