Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba4909697883632c1884eb3feecac2f7ba5900e23fd0c7411574607423aeb9ca' 
  AND token = 'bo1DHF+66Cqa2NM6N88xSZ1Q2optYzvQbf8MGhv79M0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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