Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '744719f83d4c09e964803a5f89e277ddb9f4765acda6f3a5cc2d36ccce7f9292' 
  AND token = 'WrIQeOUVOUwk1Qt8eSL+ND9dtGkPoD+fr5q1ughm3/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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