Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c73b5e4f373a2d7d1a24b132023792696241945c7f185868a4277430c4886a38' 
  AND token = '7pyAq8BUWkFu0n0hu+WBqUV0p9QY4F2nf8f9BgaqCWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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