Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b06742af7859381fc082847a9372e170d1a003fd6f69affdc3e090aab0c4f5a4' 
  AND token = 'fEu5c/3NUb55RdzQz3+LhDFL1tav7YamnzSPuIw4/WM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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