Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f193d95540bc350eb9df2bf8eef59731bed1299c5383e0212f7ade570188a3c9' 
  AND token = '3vMhP2tiAzHth3Wmc3c3QqQX/o4aZaqjxSuIwqkizRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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