Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24e6c569f45438220b297ee7d1c7c46106bf8159baa373e598f235056c4f0aa5' 
  AND token = 'Wy5nkkI2rlVmtRuWhwkkkJXG0HLNVZg5YHfWxY8Ekeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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