Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '201f82ff21a3f60fd062e3f99a1aded180da463b7d4644c348a5655fb0de2875' 
  AND token = 'si9DVw0Af05vauekzBQWcI5w8TRpZHWIkW4c7wCg8H4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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