Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78849bbc5576618e6409fec54938ab36a9cfd5bc19584d5b44c52167b633eda8' 
  AND token = 'nyl4woROeMHG00Nk9OFJ6vuafbHfoVHuMBCIuucBeqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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