SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '477dbd74ae3cd30d77da2849c275a155eef13b4905f5db26606d8f9ac187b522' 
  AND token = 'aDv3e0Sg9cjjwXBrNPMl5141wU3MfwFz/6OqCyNrGgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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