SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d2872dc4ffb08806cb994b716c8403fb09245fde309918da491db9f662496b4' 
  AND token = 'ETmB5IPDP8/Tsj79Sd+GvAHUWY7uokZ/XZizs1ogg64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00270

JSON explain

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