Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '584a86ccaea70290ae9f700777d7cc6c351991c16cbcdb3fec014bb8562b2cd3' 
  AND token = '8HImvibhREWp1VCNN3VH3cy2CsNFIrdhRwTYWyPCBQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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