Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0bcfd869a1edc151d17988e620435197ad1e5e9ca837d38e5b71f69180577b5' 
  AND token = 'EaNEzmHgzEUIqW2UG8UOsYw2YX3xT+pSus53xXXyYgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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