Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '895d49f4d1bee1d56086cda83248277b84d2de83d90fc94e24bc1382d9ef93b7' 
  AND token = 'fr+rkRoextxq+WHAizlhQQwxP9GR0GU96n1F+38uNnY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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