Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e60e995ea9f612c66f70b62c1b7b6e36685ee1720c386521c86538890d809312' 
  AND token = 'MXXFzl7Rr413G/JiPggan4+AP0Fpk7wEzGD68KjxV5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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