Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e6411e06feb1e71d1ec02bc0b524b0027fa56fcd8907b9f0566fa9c370409c72' 
  AND token = 'p5jgJnYffn0TATz+vXdEp74JrpGrwFm3fGGe/9xShcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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