Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5d933bf04153f9cd2279db228b7bb1c1759f50a05f5aa8443267a293c52e0f7' 
  AND token = 'wT53CjnCf1RrL/maNUMkAwipBxa0u723DcN59wdwXB4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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