Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e8eaa69dcc1b324257133f0a896de7b970e1430fdbd350ff51a82b3f2563681' 
  AND token = 'MhnipU3+g7ItjQQShHwjopHtcSi1Q2cWk1i6wqh+2A0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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