Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3dc419af81436e05ac6b85170ce749e70358b0cd547c2946e25a5bca0b812760' 
  AND token = 'M9fKIcYvDkeIi1oJxeFxa/yQGlCio9m2ZrlOziSDACU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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