Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '063c66b0189f57e670c3d0653677bbfd8e873aaa26b1707acb5f8ef72f128acc' 
  AND token = 'iPH165tZgiTOw3jRnvWHWs2lW0vQ/JjXCYvh2KuvCJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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