Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '332b2c85877976644eefad8811030af55aa1af6467e1c9f231762b7c18941e9f' 
  AND token = '4AiOJbncZTiw8Qf00NHQg4GHIWLBtAYAlK0chc22HLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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