Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61d1e536e80732793bc50abe7f4e7b85e7ea25828b5dd30da845bd752064a417' 
  AND token = 'IYfhhBsmiF/bqTrWiAj6lMEiLofOR6mbb8sBCvp2Nqs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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