Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66f12f94a1d4b86057727f6705807b29d6ee3b0ec9958e4c8d25a20b935ab0a0' 
  AND token = 'wIDNo1KNY0aOi8ktkpVcyP7ustTK/cRqa711sZT8/ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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