Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64ccc73897d4a6e91e711a721c327ea85109175d40428341931c180809f949d3' 
  AND token = 'jFSoQ1me2/L3hqZ3ba71E3AZ8qI1+jYYAWWrZYVVpT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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