Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acea4933603d3399583393ecc903a12db8d0f4cf996521efbe84b78001ff5cd1' 
  AND token = 'uw2j1bk6Ji9zKLRPmgLdPUTRyvzbybi95138Q0b5R/I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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