Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa1b766701a3e652ff6bea24538f8151a6af736537b74f9550f200f999f63ac1' 
  AND token = '1E/tNU3JANRgHqdRCtFy9zvFQ80p8JP/x/nZH2JuDSg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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