Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3185795ae23d8b5b165b9b7dace795792555ac83344a1c63252dcc57a1c45faf' 
  AND token = 'i7CXel4xtU0viO6AaUyA/gkvejhFPONnZ11iZ/Fhi80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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