Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '619221f655c511e5b964caa372bde237249f7a3fe4fc956e133e35e2b6f6d974' 
  AND token = 'g7PKllLYutwmT6IgYZtDM3u3wkbsD4R3A8x2Ct1dlpc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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