Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42d2479714aca9a55df1b26f14cce54ba68e4ffa3b10d72a93d7529aa462c2a2' 
  AND token = '+STi1F0YD8WehRx64CFuud6RJKDNHDl8/Ns/J4fu5Zc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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