Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa7e36df7d3532ed728af051c7089fb7dcb5a8211f5756f99c515fefac4fdc7c' 
  AND token = 'BT3trI34zWilXKeMMsMc9N40E0/mjybcMH94WwI+Yqs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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