Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7b2631e7241c91efc2f816b072d637607afbbe1ef89ea38789a6c2b19c3ccff' 
  AND token = 'bJhcivVreyjm9D3/0KkGJRsRO7Gczp87gSLXyMDGV0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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