Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f8adba86c84108997dfaac658947a3f85e5e19dc440bcfa08676befed4b160f' 
  AND token = 'Idyjkmgia8EajMY4CBXXF5mjx/BUl2fts03Pc/HyS8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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