SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95365d9992c395ff15229058d97f6fe6848633907b6daa1ea13833741867f77f' 
  AND token = 'SkFDzckjOqLLur2HOGffRnBBbq/zNgK+O7Pf3LHtRso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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