Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '737adcff11b6996ec5ea56d176628ad352e195cda87803ca264328dd15ae699d' 
  AND token = 'kAwgE4a3/UrxX9JsxZWl6GlvT7emrondqtl5S8yEJlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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