Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7fa0b5c582738de543953829cb0d0f6f1e99a5aef5d3ccb68db53838ed65bbb' 
  AND token = 'olSopgDBkwnY2P7qRvU1rpnpJPzUvdukk2as1Em3WDs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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