Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23cbc57efcf60c1e54e211757546afcb463b2c958e49d13214dee443fff534f6' 
  AND token = 'TNW2xNGrXGmI4pUg4SraPsYcpnYsSBDW/6Y2mJEvRjA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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