Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a01a48a328b6626a679ee4cce26331cad369cdc6fcd534599eeabd6e688b1659' 
  AND token = 'KxjQOU3V5xtKG4eXs6lZymRekVAkhAXCc9SjKyYrli4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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