Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c56cb681516d0b634bdc3cb948e15d23eab377681d22fef35f5c329f7359afb' 
  AND token = 'T26KTR7PdUjT4jV8tJcayy4ezI8eLZbXW8MNtICuIuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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