Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd769ba93de6003f740fad11e3426742d95ecb58d99d73997f5cdeb9077cf827f' 
  AND token = 'rw6eadcuncIE2vN9WgklnmHB/tOXLOSx48vE+dau1SQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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