Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ed41a7cff8ea059bd5c0ff82a089339e92f39c1c43ebfba121dfe9a90f86226' 
  AND token = 'KAgqgw/4wtwJTscpUgj69AeG8Lw7S8ecF2A0lmZFVcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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