Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f69c7d30dcd32dbd48241f008bb57674923920dcc83dadf1fa55169eee3caf55' 
  AND token = '/Xop9Aj0N+knceIObcXi5uK51q9bs5zojaD+BH6ePuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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