Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba7758eaab366b5360895ce3a84e05bf083543c87fe0d94e0f129315c7f4499b' 
  AND token = 'D3iJLDcoS/CblXgfFz9h/a9OchC0drAUIgadjbH/bBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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