Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f4bdad4b525764724c28d6514a1d4f67bfb65e03660389c6b4410a85ee69f20d' 
  AND token = 'HVf0RbshbhPacBsWn61iLgjt+r9sM13G9gNWxMe7HWM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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