Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cd12bb7e9356fe66a772fdf60895990b355a52b1cf6233e579d50cce6903a85' 
  AND token = 'od59T1queGPpjk69TJbxPgnw+47Z4exE1pLtw9emAJc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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