Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '367086449803b1babe701248ee1d65cdd20bf2c4639d508e0c8e834e9396e0c1' 
  AND token = 'GSo2LG6ZiGStW95B9yzcYznyiT8gz1NgZ1ikAQEUPKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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