Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a454f41c9655cd1e252dcdae5cd851df005bab1e2f778762c25290223b60ff66' 
  AND token = 'lFJvQz2pnV0aukjW7HtLOY9bSISJrg8FpLBfMchL+ec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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