SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '625c31cfe1ba324ddce2b5b19a209cc7f36497ab08c97875e6ca39ec4f4746a1' 
  AND token = 'lOG2/XCKYhZKoMU3c3cCrZvBDuIUmur4436+q62BWYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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