Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '200d38db2bc0f34951cf7359c28ff1d82bd934f133873a32f3d988c816394e3a' 
  AND token = 'H93DyRuyGdFwt/4eOutcwu0kjh6zfUJkRedY2bxwZxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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