Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '074c68dd5f01445fbb8d251d2d576564136de9ef0abbae0330bc8199b2645041' 
  AND token = 'IHnbttEwskdTUUErDhIv3wxjONO3x5GQGohD4y9bEd0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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