Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4565643ef455a07f44d45ecc4bc28e742680f92010a96deeb2fa602e5614c9fe' 
  AND token = 'VHS3Z49sNctdZf+cDNRU0p/Xx+s5eW/cD9XjHNR/fJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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