Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da1515eb88f035aa5774b3a20dcef29864f39d7289c045fa642aca4673f81e0e' 
  AND token = 'UVT8Pwi1Y2F6nQ7f3A2irwHCDKrrFzisimGukkUrG4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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