Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d25a19994f6db0102b00fc8ffcd82946419e43227b9ebf32d59d50d305ddb4d' 
  AND token = 'hkEAvBOYonX8c35zbbZ/aFKhRZFSwXg6CZmexjDEIiE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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