SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '93f130ee97443d0c416bb06fec4acf24b16176e03b805c8a2f90fc903e3d8574' 
  AND token = 'JmPq6elSYgmd/ktq6fbHGDwwbTJKS5dRmTHSh/dG77g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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