Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfcb6ce053f4ab5a9b4d4c3d7e7ae28e5d8362df2e2c46e93d9ef95ed37b69a5' 
  AND token = 'EBdK5XN75pEwSic+VcB0/p6qSz3xlvpWLJ2N7tlPNSE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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