Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ac7558af35c2cff20821fb2bb8a02f1b2abc02499c2a7156393ba4c1a4d6f67' 
  AND token = 'OyveWp/yhuHzbFondmUpPTnjOoYyXNTEpYwDNGUcDoE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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