Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a32a7e6cedad43aa5e26133fe768512c4c164d541c6314756b6d88e0f86cd5f' 
  AND token = '5wp6zsaYoPyMFlQoK+ud+SlLBaxoRnoKttyKdy2kO/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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