Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ade15c72871f25caef15b5602a07988c094976ae70415efa9f3d852a91362c1d' 
  AND token = 'YNPiCQ37Ffn2GJn/2SIGXtU+TFaa+QSy0iq5jpB/T/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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