Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a2e1b8b5deebda95b9ff01ce0bfc332a65d13f86ef56033a73c4773cc347676' 
  AND token = 'WwgEh1C4HNpeohDdB9nWYJXikDbYfIcPGn6MKLLZ53o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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