Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed597d6677ba7be309184571d67c2cc93c6858d2b20f965a5c3e1630ff1f73d4' 
  AND token = '0PcOzy+J/MzqW8fAnGtP0tBVTw3NlNwWzl65OylH/SE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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