Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d55f699924146fb08a52f06bdd220a4378a98b5746227d31297ef6127d20d77' 
  AND token = 'fpb0rdXWoSIp1RvddhtwVCgenN/9YuZQ1ffUBZcFF00=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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